Sole for spring-heel shoes.



A. H. PRENZEL.

SOLE FOR SPRING HEEL SHOES.

APPLICATION FILED JULY 3. 1914.

. Patented Feb. 15, 1916.

'l/V/TNESSES Zl/EA/ 717/8 NITED STATEsrA nnroration. ,flf

ADAM H. PRENZEL, on HALIFAX, rnnnsYLvAnrA', "AssIeNoB. To:n1\i ITED 'snoE- MACHINERY ooiviranv, onrnrnnson, NEW JERSEY, A coercerron OF NEW;

JERSEY.

To all whom it may concern:

Be it known that I, ADAM H- PRENZEL, a'

citizen of the United States, residing at Halifax-in the county of Dauphin and State of Pennsylvania, have invented certainIm provements in Soles for Spring-Heel Shoes, of which the following description, in con-" nection with the accompanying drawings,-

ture of single sole stitchdown shoes having spring heels.

A further object of the invention is to provide a shouldered sole for spring heel stitchdown shoes which will present a perfectly smooth surface upon the inside of the shoe and a neat appearance upon the outside of the shoe.

The preferred method of making the sole constituting the present invention is disclosed and fully described in my co-pending application, Ser. No. 725,480, filed Oct. 12, 1912, upon which application United States Letters Patent No. 1,105,694-were granted August 4, 1914, and of which application the present application is a division.

A preferred construction of the invention will now be described in connection with the accompanying drawing, and the novel features will then be more particularly pointed out in the claims.

Figure l is a perspective view showing a sole after the shouldering operation has been performed on the forepart of the sole; Fig. 2 is a side elevation of the sole showing the underwedge in position between "the split parts of the heel end of the sole and the sole sprung to bring its upper surface into a plane with the forepart;,Fig. 3 is a perspective view showing the sole after the shouldering operation hasbeen continued about the heel end of the sole; and Fig. 4 is a de- SOLE FOR seams- EEL sirens.

tail section of the sole showing the preferred form of the shoulder.

side, aboutthe forepart of the sole to a point 4 at thefront edge of the heel end of the sole, or v1ce versa, upon a channeling machine or other suitable means. This shoulder is preferably formed by cutting diagonally lnto the sole close to theupper edge and turning up a lip 6 in such a manner that the lip overhangs the cut somewhat.

An ad antage of this form of shoulder is that when the shoe is'made by the process described in United States Letters Patent No. 1,117,086, granted on my co-pending'application above referred to, the angleof the upper may be tucked into the cut 8' be- I neath'the overhanging shoulder 6 and the staples used to secure the upperin lasted condition may be inserted in theangle' of the cut underneath the overhanging shoulder. The heel end of the sole is then split from the rear end substantially to the points 2 and 4 to form a thin flap 10 between which and the other part 12 of the split end of the sole a spring lift or underwedge'14 may be inserted, this underwedge being tapered to a sharp edge at its forward end. The heel-end of the sole is preferably so split that the flap 10 is thin, compared to the part 12 of the sole. The underwedge 14 is inserted between the split parts of the sole and is firmly cemented to both parts, and the heel end of the sole offset at 16 to bring its-upper surface substantially into one plane. 'The upper surface of the heel end of the sole is then provided with a shoulder which will form a continuation of the shoulder 6 about theconvenient means for shouldering the heel end of the sole is a beveled rotary cutter which has its greatest diameter at its outer end. It will be noted that the flap 10, being a continuation of the material of the upper surface 20 of the forepart of the sole, forms a smooth bridge over thejoint between the this application filed m 3,?

Specification of Letters'Patent. te t Feb; :5 21916; Original application filed October 12, 1912, Serial No. 725,480. Divided-and V 1914.. Serial No. 848,756.

forward edge of the underwedge 14 and the forepart of the sole, thus providing a smooth inside for the'shoe. It will-also be noted that'the outer margin 22 of the lift is-so located that it will be secured to the heel end of the sole by the stitches by which the weltand upper are secured to the sole. A shoe can thus be completed, if desired, without using metallic fastenings and in any case without having metallic fastenings upon the inside of the shoe where they are likely to come into contact with the foot. If desired, nails may be inserted in the spring 16 to prevent the sole from breaking down at this point and nails or slugs may be inserted through the margin .22 of the wedge and the corresponding portion of-the heel end of the sole to resist the wear of these parts and to reinforce the attachment of these parts to each other and to the upper.

Having described my invention what I claim as new and desire to secure by Letters Patent is wedge secured between said flaps and having formed about its heel end a shoulder ex- 7 Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

tending through the upper flap into the wedge.

2. A sole for spring heel shoes having upper and lower flaps at its heel end, the

upper flap being comparatively thin, and a wedge secured between said flaps and having formed about its heel end a shoulder extending through the upper flap into the 1 wedge.

3. A sole for spring heel shoes having its.

tween said flaps and having formed about its heel end a shoulder extending through the upper flap into the wedge.

4. A'sole for spring heel shoes having its bottom of the forepart of the sole, said sole having upper and lower flaps forming the heel end of the sole and a wedge securedj between said flaps and having formed about its heel end a shoulder, extending through; the upper flap into the wedge and continued to form a shoulder extending about the forepart of the sole.

In testimony whereof I have signed any name to this specification in the presence of two subscribing witnesses.

ADAM H. PRENZEL.

Witnesses:

L. \V. RYAN, C. G. RYAN.

Washington, D. G.

:45 heel end ofi'set relatively to the plane of the 

